Viral haemorrhagic septicemia and infectious hematopoietic necrosis
Viral haemorrhagic septicemia (VHS) and infectious hematopoietic necrosis (IHN) are virus diseases causing heavy losses in salmonids. Norway currently has a free status for both diseases.
Both diseases are due to infection with Novirhabdovirus and are listed nationally and internationally. The VHS virus is also detected in several marine species including lumpfish and wrasse.
The purpose of the surveillance program is to document the free status for VHS and IHN in salmon and rainbow trout in Norway.
This surveillance programme has a risk-based approach. The core surveillance activity was the routine clinical inspections on farmed salmonid sites and analyses of samples collected from diseased fish. Viral haemorrhagic septicaemia virus and infectious haematopoietic necrosis virus were not detected at any of the sites tested in the 2018 surveillance.
- VHS and IHN in fish 2018 (pdf 1mb)
- VHS and IHN in fish 2017 (pdf 1mb)
- VHS and IHN in fish 2016 (pdf 1mb)
- VHS and IHN in fish 2015 (pdf 1mb)
- VHS and IHN in fish 2014 (pdf 757kb)
- VHS and IHN in fish 2012 (pdf 2mb)
- VHS and IHN in fish 2011 (pdf 1mb)
- VHS and IHN in fish 2010 (pdf 605kb)
- VHS and IHN in fish 2009 (pdf 544kb)
- VHS and IHN in fish 2008 (pdf 660kb)
- VHS and IHN in fish 2007 (p. 135) (pdf 6mb)
- VHS and IHN in fish 2006 (p. 133) (pdf 3mb)
- VHS and IHN in fish 2005 (p. 125) (pdf 4mb)
- VHS and IHN in fish 2004 (p. 127) (pdf 4mb)
- VHS and IHN in fish 2003 (p. 125) (pdf 6mb)